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When someones penis is extremely long and cannot fit in their pants. Especially when the given person is wearing sweatpants and you can clearly see the size.
1. Daniel has such a long bird. You can see the fella poking through.

2. Those sweatpants don't hide his long bird.
by Interboro May 03, 2011
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2
When someones penis is extremely long and cannot fit in their pants. Especially when the given person is wearing sweatpants and you can clearly see the size.
1. Daniel has such a long bird. You can see the fella poking through.

2. Those sweatpants don't hide his long bird.
by Interboro May 03, 2011
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Get a Long Bird mug for your cat Paul.
3
a British slang term referring to a very attractive girl with a nice body.
I saw these two thick longbirds walking through the commons today,they looked like they put out quite a bit.
by C-man dou December 14, 2007
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